C09K 8/422
Specially adapted for sealing expandable pipes
Official title: {specially adapted for sealing expandable pipes, e.g. of the non-hardening type}
C09K8/422 (Specially adapted for sealing expandable pipes) appears on 16 US grants and 21 published applications in this corpus.
Search patents in C09K- Granted patents
- 16
- Published applications
- 21
- Assignees
- 15
- Inventors
- 60
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 2 | 0 |
| 2018 | 0 | 2 |
| 2019 | 3 | 5 |
| 2020 | 3 | 2 |
| 2021 | 2 | 2 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Blowout-preventers (BOP) elastomer seals with improved self-healing21 Oct 2025US 12,448,558 B2Hydril USA Distribution LLC
- Multiphase particle, manufacturing process and use thereof13 May 2025US 12,297,149 B2China Petroleum & Chemical Corporation
- Nanosilica dispersion for thermally insulating packer fluid28 Jun 2022US 11,370,955 B2Saudi Arabian Oil Company
- Method to attain full annular coverage during cementing or mud circulation29 Mar 2022US 11,286,726 B2Halliburton Energy Services.Inc.
- Nanosilica dispersion for thermally insulating packer fluid15 Jun 2021US 11,034,881 B2Saudi Arabian Oil Company
- High performance expandable liner hanger using hydrostatic assist by chemically modifying liner hanger environment17 Sep 2026US 2026/0275182 A1Halliburton Energy Services.Inc.
- Bop elastomer seals with improved self-healing21 Dec 2023US 2023/0407161 A1Hydril USA Distribution LLC
- Method to Attain Full Annular Coverage During Cementing or Mud Circulation25 Nov 2021US 2021/0363836 A1Halliburton Energy Services.Inc.
- Multiphase particle, manufacturing process and use thereof2 Sep 2021US 2021/0269360 A1China Petroleum & Chemical Corporation
- Wellbore isolation barrier including negative thermal expansion material19 Nov 2020US 2020/0362662 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Composite wellbore seal system with sensing and self-healing capabilities8US 10,190,370 B1Stc. Unm · 2019
- Nanosilica dispersion for thermally insulating packer fluid7US 10,316,238 B2Saudi Arabian Oil Company · 2019
- Method and composition for zonal isolation of a well5US 8,689,894 B2Schlumberger Technology Corporation · 2014
- Method of opening an orifice in a downhole article, method for making the same and article made thereby5US 9,611,711 B2Baker Hughes Incorporated · 2017
- Method of producing resin composite with required thermal and mechanical properties to form a durable well seal in applications4US 10,378,299 B2Csi Technologies LLC · 2019